The Bayonne Bridge was closed today for more than 2 hours when a truck carrying bags of cement was involved in an accident and overturned, witnesses at the scene said.

The bags of cement spilled on the roadway on the Bayonne side of the bridge at about 11 a.m., stopping traffic in both directions. The bridge was finally reopened at 1:20 p.m.

The driver of the Ford F550 truck told authorities he was cut off by a tractor trailer near the entrance to the bridge, causing the truck to overturn.

Off-duty Bayonne firefighters Brian Cotter and Mark Bottino help extricate the driver from the flip on its side vehicle. The driver treated at the scene, but refused to go to the hospital. Port Authority of New York and New Jersey cops and Bayonne firefighters helped get the vehicle upright and get the bridge re-opened.